Reference page — cumulative record through Sunday, October 4, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2025-25249

CVE-2025-25249CRITICAL

Fortinet FortiSwitchManager — A heap-based buffer overflow vulnerability in Fortinet FortiOS 7.6.0 through 7.6.3, FortiOS 7.4.0 through 7.4.8, FortiOS 7.2.0 through 7.…

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   N   N  U  H  H  H    9.8   .0386   89.9   YES

AFFECTED
  Product             Versions  Fixed
  FortiSwitchManager  7.2.2 –   —
  FortiOS             7.6.0 –   —

TIMELINE
  Feb 5   Reserved by fortinet
  Jan 13  Published (CNA: fortinet)
  Sep 9   ADDED TO KEV — CVE-2025-25249 (Fortinet FortiSwitchManager). Remediation due September 12, 2026.
  Sep 10  EXPLOIT PUBLISHED — CVE-2025-25249 (Fortinet FortiSwitchManager). Public exploit reference added.
  Sep 10  RESCORED — CVE-2025-25249 (Fortinet FortiSwitchManager). CVSS 7.4 → 9.8 (NVD).
  Sep 13  DUE DATE PASSED — CVE-2025-25249 (Fortinet FortiSwitchManager). CISA remediation deadline was September 12, 2026; still in catalog.

CWE-787, CWE-122 · CNA: fortinet · CVSS v3.1 · 4 references · NVD status: Analyzed · KEV due September 12, 2026

Description

A heap-based buffer overflow vulnerability in Fortinet FortiOS 7.6.0 through 7.6.3, FortiOS 7.4.0 through 7.4.8, FortiOS 7.2.0 through 7.2.11, FortiOS 7.0.0 through 7.0.17, FortiOS 6.4 all versions, FortiSwitchManager 7.2.0 through 7.2.6, FortiSwitchManager 7.0.0 through 7.0.5 allows attacker to execute unauthorized code or commands via specially crafted packets

Lifecycle

Complete event history — 6 events, chronological
Date	Event	Detail
February 5, 2025	Reserved	Reserved by fortinet
January 13, 2026	Published	Published (CNA: fortinet)
September 9, 2026	KEV ADDED	ADDED TO KEV — CVE-2025-25249 (Fortinet FortiSwitchManager). Remediation due September 12, 2026.
September 10, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2025-25249 (Fortinet FortiSwitchManager). Public exploit reference added.
September 10, 2026	RESCORED	RESCORED — CVE-2025-25249 (Fortinet FortiSwitchManager). CVSS 7.4 → 9.8 (NVD).
September 13, 2026	DUE DATE PASSED	DUE DATE PASSED — CVE-2025-25249 (Fortinet FortiSwitchManager). CISA remediation deadline was September 12, 2026; still in catalog.

Affected

Affected products and packages — 2 rows
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
Fortinet	FortiSwitchManager	—	7.2.2	—
Fortinet	FortiOS	—	7.6.0	—

Weaknesses

CWE-787 · CWE-122

References (4)

https://cert-portal.siemens.com/productcert/html/ssa-864900.html [Third Party Advisory]
https://fortiguard.fortinet.com/psirt/FG-IR-25-084 [Vendor Advisory, Mitigation]
https://socradar.io/blog/cve-2025-25249-pivotc2-fortigate-rat/ [Exploit, Third Party Advisory]
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-25249 [US Government Resource]

Authoritative record: CVE-2025-25249 at cve.org

Vendors: fortinet

Weaknesses: CWE-787 · CWE-122

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2025-25249 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Sunday, October 4, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.